Facebook is reporting stronger-than-expected revenue in the social media company’s first earnings report since its rocky initial public offering two months ago.

But investors weren’t impressed and after a brief spike, its stock tumbled nearly 9 percent in after-hours trading.

Facebook Inc. said Thursday that it booked a net loss of $157 million, or 8 cents per share in the April-June period, mainly due to stock compensation expenses following its IPO. That compares with earnings of $240 million, or 11 cents per share, in the second quarter a year ago.

Revenue grew 32 percent to $1.18 billion from $895 million a year ago.

Analysts, on average had expected slightly lower revenue of $1.16 billion, according to FactSet.

The results come two months after Facebook’s stock landed with a thud on its first trading day, on May 18. The day began with glitches with the Nasdaq stock market that delayed trading by half an hour. It didn’t get much better from there. Despite months of hoopla that had investors thinking it would soar, the stock closed just 23 cents above its $38 IPO price. It has not reached that level since then.

Though as its first public report, Facebook had a lot riding on this quarter, Wall Street’s expectations were muted, which could be a reason for the stock price decline.

Facebook had effectively warned investors before its IPO that Wall Street’s expectations were too high. In a filing issued a week before its IPO, Facebook said its mobile users are growing at a faster pace than the number of ads on its mobile platform.

Analysts took that as a sign that their estimates were out of whack and many of them reduced their estimates for Facebook’s projected revenue and earnings.

That said, Facebook didn’t start showing ads on its mobile app until this spring. While it’s true that it was late to the game — after all, its mobile user base is growing fast — it doesn’t mean it won’t be able to in the future.

Overall, Facebook said its revenue from advertising totaled $992 million, representing 84 percent of total revenue and a 28 percent increase from the same quarter last year. It did not say what percentage was from mobile.

Facebook said it had 955 million active monthly users as of June 30, up 29 percent from a year earlier.